Author Topic: Standard short pump?  (Read 661 times)

rwmastel

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Standard short pump?
« on: August 13, 2024, 14:25:02 »
Yesterday I finally got a look at my electric fuel pump for the first time in forever.  I was expecting it to have a metal Bosch ID tag, or a stamped MB or Bosch part number, but all I see is a Bosch logo on top and bottom.

Is this a standard short pump?  I want to buy a rebuild kit.
https://youtu.be/9nXmVLlgFPQ?si=0Mcw16ZAxSSOFR7V
Rodd

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2017 C43 AMG
2006 Wrangler Rubicon
1966 230SL auto "Italian"

Pinder

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Re: Standard short pump?
« Reply #1 on: August 13, 2024, 15:07:36 »
looks like the standard short pump
1970 280 SL Light Ivory DB 670. 4 Speed manual shift no AC Limited Slip Diff.

ja17

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Re: Standard short pump?
« Reply #2 on: August 13, 2024, 15:09:57 »
It is a factory short fuel pump, looking to be in very good condition.
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback

rwmastel

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Re: Standard short pump?
« Reply #3 on: August 13, 2024, 15:20:24 »
It is a factory short fuel pump
Joe,
Whe you say "factory", is there something about it that looks factory original from Oct 1966, or do you simply mean it is a "correct" short pump?  Thanks.
Rodd

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2017 C43 AMG
2006 Wrangler Rubicon
1966 230SL auto "Italian"

Vander

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Re: Standard short pump?
« Reply #4 on: August 13, 2024, 15:54:24 »
Joe,
Whe you say "factory", is there something about it that looks factory original from Oct 1966, or do you simply mean it is a "correct" short pump?  Thanks.

It is a correct short style Bosch fuel pump. It is not from Oct 1966 as your car would have originally came with the long style. I just switched my 280SL from long to short last week.

As Joe mentioned it appears to be in very good condition. If you just clean the propeller and hook 12v up to it I bet it will work.
1969 280SL

rwmastel

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Re: Standard short pump?
« Reply #5 on: August 13, 2024, 17:24:51 »
It's been sitting 15 years with typical ethanol blend fuel in it, but I guess there's no harm in trying to simply clean and test.  Probably this coming weekend.  I'll put some hoses on it, try bench testing with fuel, and test the volume.  Is it one liter/second?

Wait, how do I bench test with fuel if safety protocol says "no electric motor near fuel vapor"?
Rodd

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1966 230SL auto "Italian"

ja17

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Re: Standard short pump?
« Reply #6 on: August 14, 2024, 02:17:42 »
Use kerosene instead of diesel fuel. Do it outside also!
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback